Ricoh-based laser printers

<Similar, but not the same. Most copies are 'illuminate for white', most <laserprinters are 'illuminate for black'. This means the corona wires are <at different voltages, amongst other things. Not as much as your expect. I worked with both the 3300 copier and the printer version (XP12/24) and same for the Ricoh 1040(40ppm). It was coincidence we had both in the group so copier repair was a common task and not in my basic training. ;) <Also, the scanning in a photocopier is entirely mechanical, and is (in <general) synchronised mechanically. Laser printers have a lot of <electronic sync stuff, things like the laser beam detect sensor, the <registration shutter, etc. Like I said different optics. <Still, understanding a copier is a good starting point for understanding <a laser printer. Just expect there to be a lot of changes. The packaging of of the optical system is where the differece are significant but a basic understanding of electrophotography is in order and the xerox texts does cover reverse printing (uses reversed relative electrostatic bias). FYI: when training the trainer I stopped a smart ass FSE cold by tweeking the bias so everything was reversed. Took him 4 hours to swap everthing and not fix it. Allison